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What is the minimum frequency of light needed to free an electron from a neon nucleus when the electron is in its lowest energy level n=1?
What frequency is emitted by an electron that falls from the n=7 to the n=2 energy level of a neon nucleus?
Answers: 3.28×1017 Hz and 7.55×1016 Hz
You throw a 5-kg ball from a platform releasing the ball at a height of 5 meters with a speed of 10m/s at an angle of 30 degrees with respect to the horixontal. Find the maximum height of the ball above the ground
An object initially at rest breaks into two pieces as the result of an explosion. One piece has twice the kinetic energy of the oter piece. What is the ratio of the masses of the two pieces? Which piece has the larger mass?
An aluminum bar has a length of 1.8 m and a rectangular cross section with sides of 3.4 mm and 7.0 mm. What is the strain for this value of the stretch
A force F= (6x - 2y)N acts on a particle that undergoes a displacement delta r= (3x + y)m. Find (a) the work done by the force on the particle and (b) the angle between F and r.
A 2.00-kg package is released ona 53.1o incline, 4.00 m from a longspring with force constant 120 n/m that is attached at the bottom of the incline . The coefficients of friction between the package and the incline are static frictionis 0.4 and ki..
A typical adult ear has a surface area of 1.45 × 10-3 m2. The sound intensity during a normal conversation is about 2.49 × 10-6 W/m2 at the listener's ear. How much power is intercepted by the ear
At the point he throws a 50.0 yards forward pass straight down the field. Illustrate what is the magnitude of the football's resultant displacement?
Two equally charged insulating balls each weigh 0.50 g and hang from a common point by identical threads 30 cm long, What is the magnitude of the charge on each ball
A moving particle encounters an external electric field that decreases its kinetic energy from 9520eV to 7060eV as the particle moves from position A to position B. The electric potential at A is -55.0V and the electric potential at B is +27.0V. ..
A projectile is fired at v0 = 381.0 m/s at an angle of ? = 65.7o with respect to the horizontal, How far will the projectile travel in the horizontal direction, R
Several children are on a sled pulled by a four-wheeler across a level snow-covered field
1 explain what is meant by the terms isothermal expansion and adiabatic expansion. in each case derive an expression
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